/*********************************************************************************
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 * The MIT License (MIT)                                                         *
 *                                                                               *
 * Copyright (c) 2015-2023 aoju.org and other contributors.                      *
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package org.aoju.bus.image.nimble.opencv;

import org.aoju.bus.image.nimble.codec.ImageDescriptor;
import org.aoju.bus.logger.Logger;

import javax.imageio.stream.MemoryCacheImageInputStream;
import java.io.ByteArrayInputStream;
import java.lang.reflect.Field;
import java.nio.ByteBuffer;

/**
 * @author Kimi Liu
 * @since Java 17+
 */
public class MemoryStreamSegment extends StreamSegment {

    private final ByteBuffer cache;

    MemoryStreamSegment(ByteBuffer b, ImageDescriptor imageDescriptor) {
        super(new long[]{0}, new long[]{b.limit()}, imageDescriptor);
        this.cache = b;
    }

    public static ByteArrayInputStream getByteArrayInputStream(MemoryCacheImageInputStream inputStream) {
        if (null != inputStream) {
            try {
                Field fid = MemoryCacheImageInputStream.class.getDeclaredField("stream");
                if (null != fid) {
                    fid.setAccessible(true);
                    return (ByteArrayInputStream) fid.get(inputStream);
                }
            } catch (Exception e) {
                Logger.error("Cannot get inputstream", e);
            }
        }
        return null;
    }

    public ByteBuffer getCache() {
        return cache;
    }

}
